Of these, vpFREE2 considers 1 game "good" or "playable",
under typical circumstances, with a return of at least 99%, including SW (FP).
At least those 1 game may appear in the casino pages.

Other, lower returning variants may also appear if they are "progressive" or are the best games in the casino.
Unfortunately, there are no commonly found variations of SW with a return of at least 100%.